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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
import re
import time
import threading
from os import path
from lib.py import (
ksft_run,
ksft_exit,
ksft_eq,
ksft_in,
ksft_not_in,
ksft_raises,
)
from lib.py import (
NetDrvContEnv,
NetNSEnter,
EthtoolFamily,
NetdevFamily,
)
from lib.py import (
bkg,
cmd,
defer,
ethtool,
ip,
rand_port,
wait_port_listen,
)
from lib.py import KsftSkipEx, CmdExitFailure
def set_flow_rule(cfg):
output = ethtool(
f"-N {cfg.ifname} flow-type tcp6 dst-port {cfg.port} action {cfg.src_queue}"
).stdout
values = re.search(r"ID (\d+)", output).group(1)
return int(values)
def test_iou_zcrx(cfg) -> None:
cfg.require_ipver("6")
ethnl = EthtoolFamily()
rings = ethnl.rings_get({"header": {"dev-index": cfg.ifindex}})
rx_rings = rings["rx"]
hds_thresh = rings.get("hds-thresh", 0)
ethnl.rings_set(
{
"header": {"dev-index": cfg.ifindex},
"tcp-data-split": "enabled",
"hds-thresh": 0,
"rx": 64,
}
)
defer(
ethnl.rings_set,
{
"header": {"dev-index": cfg.ifindex},
"tcp-data-split": "unknown",
"hds-thresh": hds_thresh,
"rx": rx_rings,
},
)
ethtool(f"-X {cfg.ifname} equal {cfg.src_queue}")
defer(ethtool, f"-X {cfg.ifname} default")
flow_rule_id = set_flow_rule(cfg)
defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}")
rx_cmd = f"ip netns exec {cfg.netns.name} {cfg.bin_local} -s -p {cfg.port} -i {cfg._nk_guest_ifname} -q {cfg.nk_queue}"
tx_cmd = f"{cfg.bin_remote} -c -h {cfg.nk_guest_ipv6} -p {cfg.port} -l 12840"
with bkg(rx_cmd, exit_wait=True):
wait_port_listen(cfg.port, proto="tcp", ns=cfg.netns)
cmd(tx_cmd, host=cfg.remote)
def test_attrs(cfg) -> None:
cfg.require_ipver("6")
netdevnl = NetdevFamily()
queue_info = netdevnl.queue_get(
{"ifindex": cfg.ifindex, "id": cfg.src_queue, "type": "rx"}
)
ksft_eq(queue_info["id"], cfg.src_queue)
ksft_eq(queue_info["type"], "rx")
ksft_eq(queue_info["ifindex"], cfg.ifindex)
ksft_in("lease", queue_info)
lease = queue_info["lease"]
ksft_eq(lease["ifindex"], cfg.nk_guest_ifindex)
ksft_eq(lease["queue"]["id"], cfg.nk_queue)
ksft_eq(lease["queue"]["type"], "rx")
ksft_in("netns-id", lease)
def test_attach_xdp_with_mp(cfg) -> None:
cfg.require_ipver("6")
ethnl = EthtoolFamily()
rings = ethnl.rings_get({"header": {"dev-index": cfg.ifindex}})
rx_rings = rings["rx"]
hds_thresh = rings.get("hds-thresh", 0)
ethnl.rings_set(
{
"header": {"dev-index": cfg.ifindex},
"tcp-data-split": "enabled",
"hds-thresh": 0,
"rx": 64,
}
)
defer(
ethnl.rings_set,
{
"header": {"dev-index": cfg.ifindex},
"tcp-data-split": "unknown",
"hds-thresh": hds_thresh,
"rx": rx_rings,
},
)
ethtool(f"-X {cfg.ifname} equal {cfg.src_queue}")
defer(ethtool, f"-X {cfg.ifname} default")
netdevnl = NetdevFamily()
rx_cmd = f"ip netns exec {cfg.netns.name} {cfg.bin_local} -s -p {cfg.port} -i {cfg._nk_guest_ifname} -q {cfg.nk_queue}"
with bkg(rx_cmd):
wait_port_listen(cfg.port, proto="tcp", ns=cfg.netns)
time.sleep(0.1)
queue_info = netdevnl.queue_get(
{"ifindex": cfg.ifindex, "id": cfg.src_queue, "type": "rx"}
)
ksft_in("io-uring", queue_info)
prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
with ksft_raises(CmdExitFailure):
ip(f"link set dev {cfg.ifname} xdp obj {prog} sec xdp.frags")
time.sleep(0.1)
queue_info = netdevnl.queue_get(
{"ifindex": cfg.ifindex, "id": cfg.src_queue, "type": "rx"}
)
ksft_not_in("io-uring", queue_info)
def test_destroy(cfg) -> None:
cfg.require_ipver("6")
ethnl = EthtoolFamily()
rings = ethnl.rings_get({"header": {"dev-index": cfg.ifindex}})
rx_rings = rings["rx"]
hds_thresh = rings.get("hds-thresh", 0)
ethnl.rings_set(
{
"header": {"dev-index": cfg.ifindex},
"tcp-data-split": "enabled",
"hds-thresh": 0,
"rx": 64,
}
)
defer(
ethnl.rings_set,
{
"header": {"dev-index": cfg.ifindex},
"tcp-data-split": "unknown",
"hds-thresh": hds_thresh,
"rx": rx_rings,
},
)
ethtool(f"-X {cfg.ifname} equal {cfg.src_queue}")
defer(ethtool, f"-X {cfg.ifname} default")
rx_cmd = f"ip netns exec {cfg.netns.name} {cfg.bin_local} -s -p {cfg.port} -i {cfg._nk_guest_ifname} -q {cfg.nk_queue}"
rx_proc = cmd(rx_cmd, background=True)
wait_port_listen(cfg.port, proto="tcp", ns=cfg.netns)
netdevnl = NetdevFamily()
queue_info = netdevnl.queue_get(
{"ifindex": cfg.ifindex, "id": cfg.src_queue, "type": "rx"}
)
ksft_in("io-uring", queue_info)
# ip link del will wait for all refs to drop first, but iou-zcrx is holding
# onto a ref. Terminate iou-zcrx async via a thread after a delay.
kill_timer = threading.Timer(1, rx_proc.proc.terminate)
kill_timer.start()
ip(f"link del dev {cfg._nk_host_ifname}")
kill_timer.join()
cfg._nk_host_ifname = None
cfg._nk_guest_ifname = None
queue_info = netdevnl.queue_get(
{"ifindex": cfg.ifindex, "id": cfg.src_queue, "type": "rx"}
)
ksft_not_in("io-uring", queue_info)
cmd(f"tc filter del dev {cfg.ifname} ingress pref {cfg._bpf_prog_pref}")
cfg._tc_attached = False
flow_rule_id = set_flow_rule(cfg)
defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}")
rx_cmd = f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} -q {cfg.src_queue}"
tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {cfg.port} -l 12840"
with bkg(rx_cmd, exit_wait=True):
wait_port_listen(cfg.port, proto="tcp")
cmd(tx_cmd, host=cfg.remote)
# Short delay since iou cleanup is async and takes a bit of time.
time.sleep(0.1)
queue_info = netdevnl.queue_get(
{"ifindex": cfg.ifindex, "id": cfg.src_queue, "type": "rx"}
)
ksft_not_in("io-uring", queue_info)
def main() -> None:
with NetDrvContEnv(__file__, rxqueues=2) as cfg:
cfg.bin_local = path.abspath(
path.dirname(__file__) + "/../../../drivers/net/hw/iou-zcrx"
)
cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
cfg.port = rand_port()
ethnl = EthtoolFamily()
channels = ethnl.channels_get({"header": {"dev-index": cfg.ifindex}})
channels = channels["combined-count"]
if channels < 2:
raise KsftSkipEx("Test requires NETIF with at least 2 combined channels")
cfg.src_queue = channels - 1
with NetNSEnter(str(cfg.netns)):
netdevnl = NetdevFamily()
bind_result = netdevnl.queue_create(
{
"ifindex": cfg.nk_guest_ifindex,
"type": "rx",
"lease": {
"ifindex": cfg.ifindex,
"queue": {"id": cfg.src_queue, "type": "rx"},
"netns-id": 0,
},
}
)
cfg.nk_queue = bind_result["id"]
# test_destroy must be last because it destroys the netkit devices
ksft_run(
[test_iou_zcrx, test_attrs, test_attach_xdp_with_mp, test_destroy],
args=(cfg,),
)
ksft_exit()
if __name__ == "__main__":
main()
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